It's been mentioned before in the forums but darned if I can find the message that names software you can put on a PC workstation that pretty much emulates your live host server.

What I would like to do is set up a dedicated pc workstation upon which I would load my entire Zen Cart sites including the databases and use as a development/test/maintenance station. I could install, test and debug any changes to my websites offline including installation of contributions. When satisfied that everything is working I would FTP the files to the live website with some confidence that the changes will work.

My live websites are hosted on Linux, Apache and MySQL 4

What's the name of the software I need to create or emulate that environment on a PC and where can I obtain it?

Many thanks in advance,
Ron